I think you're forgetting the cost parameter—obviously no provider can guarantee either reliability or stability
Eg if your service vendor costs you 1000/month and they have a 10-day outage and you lose 10000000, they will credit you 1000 best-case, or maybe 1/3 of that (since it was up most of the month).
Umm, most providers' standard T&Cs exclude liability for indirect or consequential loss following unavailability of their service.